... soda flake, pearl or solid Purity 99% 98% 96%25tons/1*20"FCL 40bags/ton2.Specifications ... caustic soda/sodium hydroxide and alkaline desiccant, paper, aluminum smelting, refining tungsten, rayon and soap manufacturing. ... salt production, preparation of borax, chromium salt, potassium permanganate, phosphate, etc., but also the use ... ,Small quantity is welcomed 99%min Sodium Hydroxide industrial grade